Feature Extraction for Finger Motor Imagery

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  • Taketoshi Wataru
    Department of Systems Design and Informatics, Graduate School of Computer Science and Systems Engineering, Kyushu Institute of Technology
  • Maeda Makoto
    Department of Systems Design and Informatics, Graduate School of Computer Science and Systems Engineering, Kyushu Institute of Technology
  • Kobayashi Jun
    Department of Systems Design and Informatics, Graduate School of Computer Science and Systems Engineering, Kyushu Institute of Technology
  • Inoue Katsuhiro
    Department of Systems Design and Informatics, Graduate School of Computer Science and Systems Engineering, Kyushu Institute of Technology

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説明

In recent years, the studies on Brain Computer Interface (BCI) to manipulate computer using an electroencephalogram, not through devices such as keyboards and mice, have been actively conducted. The main purpose of such BCIs is to develop communication tools for handicapped users. In this paper, we investigated differences among behaviors of Bereitschaftspotential (BP) which is one of components of movement-related cortical potentials (MRCPs), during the motor imagery of simple movements and complex movements of fingers. As a result, before and after training, some changes, such as integration or deletion, have been observed in the components related to voluntary movements, such as BP, etc. In addition, the inflow and outflow of information between Fpz and Cz have been confirmed to be reversed at intervals of 0.5 sec to 1 sec before each movement onset.

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